JP3973290B2 - Iron plate with resin - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin-coated iron plate material obtained by molding a resin on a steel plate and is a technique suitable for use in a door of an air conditioner.
[0002]
[Prior art]
For example, what is shown in FIGS. 4-6 is known as a door of an air conditioner. This door is a parent door J1 of the parent and child doors used for the inside / outside air switching door, and includes a press-formed iron plate J2, a duct J4 communicating with the through hole J3 of the iron plate J2, and a bearing portion J5 of the child door. And a resin member J6 to be formed.
This parent door J1 is an example of an iron plate material with resin, and the resin member J6 is integrally formed on the iron plate J2 by placing the iron plate J2 in a resin mold and injecting the resin into the mold. It is a molded product.
[0003]
[Problems to be solved by the invention]
In the main door J1 shown above, one side of the iron plate J2 has more resin member J6 due to the duct J4 and the bearing portion J5 of the child door, and conversely, the other surface of the iron plate J2 has less resin member J6. . Thus, if there is a large deviation in the amount of resin on the front and back of the iron plate J2, warping of the iron plate J2 (see arrow β in FIG. 5) occurs due to resin shrinkage (see arrow α in FIG. 5) that occurs immediately after resin molding. As a result, the parent door J1 is warped.
[0004]
OBJECT OF THE INVENTION
The present invention is a technique applied to a resin-coated iron plate in which a resin member is integrally formed on an iron plate by placing the iron plate in a resin mold and injecting the resin into the mold. An object of the present invention is to provide an iron plate material with resin that can prevent the warpage of the iron plate even if there is a large deviation.
[0005]
[Means for Solving the Problems]
The following technical means was adopted for the resin-coated iron plate material of the present invention.
[Means of Claim 1]
On the surface on the side where there are many resin members, by providing the meat stealing portion on the resin member in contact with the iron plate, the influence of the resin shrinkage that occurs immediately after resin molding on the iron plate is suppressed to a small level.
Also, on the surface on the side with less resin member, the rib that protrudes in a substantially vertical direction with respect to the iron plate is provided by the resin member, so that a force that the iron plate warps against the side with more resin member immediately after resin molding acts. Even so, the rib acts against the warping force.
Thus, by providing the meat stealing portion and the rib, it is possible to suppress the iron plate from warping due to the shrinkage of the resin that occurs immediately after the resin molding.
[0006]
Since the warp of the iron plate is suppressed, it is possible to suppress the warping of the parent door.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
Embodiment
The embodiment will be described with reference to FIGS. In this embodiment, the present invention is applied to a parent-child door of an air conditioner. FIG. 1 is a plan view of the parent door, FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is sectional drawing which follows the BB line.
The parent-child door is composed of a parent door 1 and a child door (not shown), and is provided so that the child door opens and closes a through hole 2 provided in the parent door 1.
[0008]
The parent door 1 includes an iron plate 3, a resin member 4, a packing (not shown), and a rotating shaft (not shown).
The iron plate 3 is a press-molded product that forms the base of the parent door 1, and a through hole 2 is provided at a substantially central portion.
The resin member 4 forms a duct 5 communicating with the through hole 2 provided in the iron plate 3 and a bearing portion 6 that supports the shaft of the child door.
The resin member 4 is formed integrally with the iron plate 3 by placing the iron plate 3 in a resin mold, injecting the resin into the resin mold in that state, and removing the iron plate 3 from the resin mold after the resin is cured. It is.
[0009]
One surface (the left surface in FIG. 2) of the resin member 4 is formed with the duct 5 and the bearing portion 6 to increase the resin member 4, and the other surface (the right surface in FIG. 2) is for fixing the iron plate. Only the resin 7 is formed, and the resin member 4 is reduced. Thus, although the parent and child door has a large deviation in the resin amount on the front and back of the iron plate 3, the meat stealing portion 8 (in the hatching of FIG. 1) The ribs 9 (portions shown by hatching in FIG. 3) projecting in the vertical direction with respect to the iron plate 3 are formed by the resin member 4 on the surface of the opposite side where the resin member 4 is small. Yes . Li Bed 9, are provided along one side of the through hole 2.
[0010]
In this way, on the surface on which the resin member 4 is large (the surface on which the duct 5 and the bearing portion 6 are formed), the meat stealing portion 8 is provided on the portion of the resin member 4 in contact with the iron plate 3. Even if the duct 5 or the bearing portion 6 contracts immediately after that, the tensile force exerted on the iron plate 3 by the resin contraction can be kept small.
Further, since the rib 9 is formed by the resin member 4 on the surface on which the resin member 4 is few, the duct 5 and the bearing portion 6 on the opposite surface contract immediately after the resin molding and a force that warps the iron plate 3 is generated. Even so, the rib 9 faces the warping force, and the warpage of the iron plate 3 can be suppressed.
Thus, by providing the meat stealing portion 8 and the rib 9 by the resin member 4, it is possible to suppress the iron plate 3 from warping due to the shrinkage of the resin generated immediately after the resin molding, and as a result, the parent door 1 is warped. Defects can be suppressed.
[Brief description of the drawings]
FIG. 1 is a plan view of a parent door (embodiment).
FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 (embodiment).
FIG. 3 is a cross-sectional view taken along line BB in FIG. 1 (embodiment).
FIG. 4 is a plan view of a parent door (conventional example).
5 is a cross-sectional view taken along line CC of FIG. 4 (conventional example).
FIG. 6 is a side view of a parent door (conventional example).
[Explanation of symbols]
1 Parent door (iron plate with resin)
2 Through-hole 3 Iron plate 4 Resin member 5 Duct 6 Bearing part 8 Meat stealing part 9 Rib

Claims (2)

Iron Ri name by an integrally formed resin member to the iron plate housed in a resin mold, the resin-coated steel plate material is a child parent door door for use in an air conditioning apparatus,
On the surface of the iron plate on the side where the resin member is large, the resin member in contact with the iron plate is provided with a meat stealing portion,
On the surface of the iron plate where the resin member is less, a rib protruding in a direction substantially perpendicular to the iron plate is provided by the resin member ,
The iron plate is provided with a through hole in a substantially central portion,
The rib with a resin is provided along one side of the through hole . In the iron plate with resin according to claim 1 ,
Before SL resin member, the duct communicated with the through hole provided in the iron plate, and the resin coated steel plate material and forming a bearing portion for supporting the shaft of the child door for opening and closing the duct.

Images